特集—新たなガス燃料への取り組み
高品質消化ガスの燃焼について
キーワード:
Mixed combustion,
Digestion gas,
Quality enhancement,
Concentration increase,
Substitute for city gas,
effective use
2013 年 55 巻 171 号 p. 27-35
詳細
2013 年 55 巻 171 号 p. 27-35
In the City of Yokohama, countermeasures against global warming have already been taken in a variety of forms, and technologies have been developed for the effective use of digestion gas which is a valuable energy generated from sewage works. As a result of our research carried out in 2005, digestion gas was refined to a high quality level of methane concentration not less than 95%. Then, in the equipment endurance tests performed as our researches in 2006 and 2007, the stability and infrequent maintainability of the equipment were confirmed as well as the quality of the digestion gas refined in long and continuous refining processes. The refined quality-enhanced digestion gas is expected to be effectively used as a substitute fuel to the city gas, however its substitutability has not been evaluated yet. In this research its combustion performance when mixed with the city gas, the limit values of the mixture ratio, and the property of the exhaust were examined and it was clarified that the digestion gas can serve as an excellent substitute fuel.
